The only duty a person taking on risk for health purposes should have is to demonstrate that it is truly a personal risk (no spillover onto others) with a decision made of sound mind.

Of course some will protest, "but, some people will see this and try to treat themselves!" I will, of course, remind those people that there is a substantial cohort of people who attempt to treat themselves with stupid or potentially dangerous and disproven remedies allllll the time. People drink bleach. Others give their kids honey for meningitis. And, Steve Jobs delayed treatment on a surgically curable form of neuroendocrine pancreatic cancer -- identified in advance by pure coincidence (a gift from the cosmos) -- in favor of dietary change recommendations derived of dis- and un-proven "alternative medicine" therapies.

The fact that an expert applied their extensive scientific expertise -- with precision -- and only after conventional treatment failed should be less a shock and more a wake-up call to all of the people gatekeeping in the industry.

The mother of invention is necessity, and so empowering great minds to take on personal risk in search of self-cure would likely have a massive impact on health science with limited downside. Require them to demonstrate the risk is their own, and let them go thereafter.

As an aside, this reminds me of the ludicrous nature of HRT. People beyond often see an attrition of sex hormones over time. That attrition contributes to feelings of unwellness. They take seek HRT wanting to feel well, and more often than not they're denied b/c there is some small hypothetical risk to themselves associated with it. As if it's perfectly acceptable to tell someone to commit to 30 years of poor quality of life to avoid the miniscule fraction of a more often than not unproven and hypothetical increased hazard of cancer developing in a few decades. I've never been able to understand why so many people feel the need to tell others which (very reasonable) risks they can take in search of health and wellness, the latter an important category to which quality of life belongs.